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"History, I believe, furnishes no example of a priest-ridden people maintaining a free civil government".
-Thomas Jefferson

Burden of proof is the obligation on somebody presenting a claim to provide evidence to support its truth (a warrant). Once evidence has been presented, it is up to any opposing "side" to show the evidence presented is not adequate. If claims were accepted without warrants, then every claim could simultaneously be claimed to be true.

History isn't written by the victors. It's written by the people with the time machines.

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I do not fear death, in view of the fact that I had been dead for billions and billions of years before I was born, and had not suffered the slightest inconvenience from it.
Mark Twain

The glow from the landing looks alot like the take off, I wonder how much fuel is needed to complete the task of landing? Amazing , Going to have a read.

It's a given that it's much less than take off, but you can work out the maximum fairly simply by knowing the coefficient of resistance of the rocket body, the height from which it descends and the air density gradient, these in turn will give you the terminal velocity of the falling rocket body in an atmosphere of increasing density. So the maximum you need is enough to slow the rocket from terminal velocity to zero, and if you have a really good aim you don't even need any spare for steering

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From the mouth of a seven year old: "When you're you're dead, you don't go anywhere!"

SpaceX has successfully landed the Falcon 9 on the floating platform, the first successful landing on an ocean going landing dock, which essentially means they can now launch from just about anywhere, and I suspect this is the main purpose of the platform. Different orbits, ie: polar, equatorial, require different amounts of fuel from the same launching point, but if they can launch and then land on a floating platform they can launch at the cheapest rate for a given desired orbit.

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From the mouth of a seven year old: "When you're you're dead, you don't go anywhere!"